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linux/kernel/events
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Peter Zijlstra 2ab9d83026 perf/aux: Fix AUX buffer serialization 
Ole reported that event->mmap_mutex is strictly insufficient to
serialize the AUX buffer, add a per RB mutex to fully serialize it.

Note that in the lock order comment the perf_event::mmap_mutex order
was already wrong, that is, it nesting under mmap_lock is not new with
this patch.

Fixes: 45bfb2e504 ("perf: Add AUX area to ring buffer for raw data streams")
Reported-by: Ole <ole@binarygecko.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
History 2024-09-04 18:22:56 +02:00
..
callchain.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
core.c perf/aux: Fix AUX buffer serialization 2024-09-04 18:22:56 +02:00
hw_breakpoint.c perf/hw_breakpoint: Remove arch breakpoint hooks 2023-08-16 23:54:50 +10:00
hw_breakpoint_test.c perf/hw_breakpoint: remove MODULE_LICENSE in non-modules 2023-04-13 13:13:52 -07:00
internal.h perf/aux: Fix AUX buffer serialization 2024-09-04 18:22:56 +02:00
Makefile perf/hw_breakpoint: Add KUnit test for constraints accounting 2022-08-30 10:56:20 +02:00
ring_buffer.c perf/aux: Fix AUX buffer serialization 2024-09-04 18:22:56 +02:00
uprobes.c uprobes: Use kzalloc to allocate xol area 2024-09-03 16:54:02 +02:00